The operation add items to list cannot accept the arguments
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Show related blocks clearly. From what you have shown, it seems that your global latest variable is empty and is not returning any list
U cannot add a item in a string
First initialise ur list in global variable
I’m new to kodular, can I add an item
Yes you can, but as said 
Check the mentioned variable using ‘Do it’ during live testing
Welcome. It’s no problem whether or not you’re new to Kodular. This is a syntax error. Identifying an error is part of learning. Can you understand the error message?
First Initialise ur empty list in global variable then after add the items to list
Thank you for solving the problem
yes this error thanks